Unit Four: Upper Extremity: Part 2

Question 1

What are the four posterior muscles of the pectoral girdle?

Answer 1

1. Trapezius. 2. Deltoid. 3. Teres major. 4. Latissimus dorsi.

Question 2

What muscles attach to the lesser tubercle, or intertubular groove, of the humerus?

Answer 2

1. Teres major. 2. Latissimus dorsi. 3. Pectoral major.

Question 3

What muscles insert somewhere along the medial border of the scapuila?

Answer 3

1. Serratus Anterior. 2. Levator scapulae. 3. Rhomboid major. 4. Rhomboid minor.

Question 4

What muscles have an attachment point at the coracoid process of the scapula?

Answer 4

1. Pectoralis minor. 2. Coracobrachialis. 3. Short head of biceps brachii.

Question 5

What three muscles insert onto the greater tubercle of the humerus?

Answer 5

1. Supraspinatus. 2. Infraspinatus. 3. Teres minor.

Question 6

What muscles allow for scapular elevation?

Answer 6

1. Superior fibers of the trapezius. 2. Levator scapulae. 3. Rhomboids.

Question 7

What muscles allow for scapular depression?

Answer 7

1. Inferior fibers of trapezius. 2. Pectoralis minor.

Question 8

What muscles allow for scapular protraction?

Answer 8

1. Pectoralis minor. 2. Serratus anterior.

Question 9

What muscles allow for scapular retraction?

Answer 9

1. Rhomboid minor. 2. Rhomboid major. 3. Middle fibers of trapezius.

Question 10

What muscles allow for scapular inferior (downward) rotation?

Answer 10

1. Levator scapulae. 2. Rhomboid minor. 3. Rhomboid major.

Question 11

What muscles allow for scapular superior (upward) rotation?

Answer 11

1. Superior fibers of trapezius. 2. Serratus anterior.

Question 12

What muscles allow for GH lateral rotation?

Answer 12

1. Posterior fibers of deltoid. 2. Infraspinatus. 3. Teres minor.

Question 13

What muscles allow for GH abduction?

Answer 13

1. Middle fibers for deltoid. 2. Supraspinatus.

Question 14

What muscles allow for GH flexion?

Answer 14

1. Anterior fibers of deltoid. 2. Coracobrachialis. 3. Biceps brachii. 4. Pectoralis major.

Question 15

What muscles allow for GH horizontal abduction?

Answer 15

1. Posterior fibers of deltoid. 2. Infraspinatus? Teres minor?

Question 16

What muscles allow for GH horizontal adduction?

Answer 16

1. Pectoralis major. 2. Coracobrachialis? Anterior deltoid?

Question 17

What muscles allow for GH extension?

Answer 17

1. Lattisimus dorsi. 2. Posterior fibers of deltoid. 3. Teres major. 4. Triceps brachii.

Question 18

What muscles allow for GH medial roation?

Answer 18

1. Subscapularis. 2. Latissimus dorsi. 3. Anterior fibers of deltoid. 4. Teres major.

Question 19

What muscles allow for GH adduction?

Answer 19

1. Latissimus dorsi. 2. Pectoralis major. 3. Coracobrachialis. 4. Teres major.

Question 20

What does the subclavian artery become after passing the first rib?

Answer 20

The axillary artery.

Question 21

What does the axillary artery become at the inferior border of the teres major?

Answer 21

The brachial artery.

Question 22

What does the brachial artery divide into at the cubital fossa?

Answer 22

1. Ulna. 2. Radial.

Question 23

What artery branches off of the subclavian artery?

Answer 23

The thyrocervical trunk.

Question 24

What two arteries branch off of the thyrocervical trunk?

Answer 24

1. Suprascapular artery. 2. Dorsal scapular.

Question 25

What is the first part of the axillary artery?

Answer 25

The superior thoracic artery.

Question 26

What does the superior thoracic provide blood to?

Answer 26

Serratus anterior.

Question 27

What is the second part of the axillary artery comprised of?

Answer 27

1. Thoracoacromial. 2. Lateral thoracic.

Question 28

What is the third part of the axillary artery comprised of?

Answer 28

1. Subscapular. 2. Posterior circumflex humeral artery. 3. Anterior circumflex artery.

Question 29

What arteries branch off of the subscapular artery?

Answer 29

1. Circumflex scapular artery. 2. Thoracodorsal artery.

Question 30

What does the anterior circumflex artery supply?

Answer 30

The anterior arm.

Question 31

What branches off of the brachial artery?

Answer 31

The deep brachial artery.

Question 32

What does the cephalic vein drain blood from?

Answer 32

The anterolateral forearm and arm.

Question 33

Where does the cepahlic vein drain blood into?

Answer 33

The axillary vein.

Question 34

Where does the basilic vein drain blood from?

Answer 34

The medial forearm and arm.

Question 35

What does the basilic join with and what does it form?

Answer 35

It joins with the brachial vein to form the axillary vein.

Question 36

What does the median cubital vein do?

Answer 36

It provides communication between basilic and cephalic veins in the cubital fossa.

Question 37

Where does the axillary vein drain blood into?

Answer 37

The subclavian vein.

Question 38

What is the brachial vein?

Answer 38

A deep vein in the arm.

Question 39

What muscles are involved in elbow flexion?

Answer 39

1. Brachioradialis. 2. Brachialis. 3. Biceps brachii.

Question 40

What muscles supinate the arm?

Answer 40

1. Supinator. 2. Biceps brachii. 3. Brachioradialis.

Question 41

What muscles extend the wrist?

Answer 41

Triceps brachii.